Method of making metal soaps



" soap which is-gcileeteqf rqm the variously desi soap, sulfate skim Patented Aug. 7, 1945 i venti'on" slates to caps e earth ?metals derived' f-r m' e paper industry as f'floating "th f s il i s da i s s. 5m 611 1 5 1 h s; "f lqat ne sbfepf. h see teas -sadism oleo resi e, "'ingsf fand"resriol Floating soapjfl is essentially; the sodium salt analysis, the physical properties and chemical properties of, floating soap vary to a certain extent, depending on the conditions of its manufacture, and the woody material from which it is obtained. Analyses published indicate the presence of the sodium salts of abietic, pimaric, levopimaric, pyro abietic, oleic acid, andlinolenic acid, free sodium hydroxide, free sodium sulfide, sodium lignate, free sodium carbonate, and sterols. A broad designation of the material as sodium oleo-resinate is possibly as accurate, chemically, as can at the present bedevised; If we broadly classify the acids as abietic and fatty acids, then the analysis will vary approximately between: j

p Percent Moisture 35-40 Soda (as Na) 3.5- 4.5 Sterols 3.8- 4.5

Abietic acids 2 5 30 Fatty acids Depending on the type of wood used the fatty acid fraction is some times as much as 5% greater than the abietic content, and with othertypes the abietic fraction is the greater. I have found that metallic oleo-resinates of the heavymetals such as copperjaluminum, calcium, lead, manganese, magnesium, mercury, nickel, zinc, tin, silver and others hereinafter mentioned,

may be "readily prepared from floating soap.

. It has heretofore been proposed to make heavy metal and. alkaline earthv soap from talloil which, broadly, is a mixture of fatty and resinic acids derived from floating soap." Talloil may,

among other methods, be'obtained' by treating 'floating soap with an] acid which will liberate the fatty and resinic acids in the soap, and then subjecting the product to suitable purifying processes. For example see Michelson Patent No. 1,823,752, dated September 15, 19-31. It is a principal object of this invention to provide a process of themesrenades part of the tree. It is formed I 1 during the cooking reaction and on standing I 'floats to the top ofthe spent solution. The

assignor oration ,of;

for producing such so'apsdirectly fromthecrude eparation of arsenic fiQWfi swi s salt cif th'emetal off whicht sired; for instance copper sulfate, is added while stirring, to the ffloatin'g s'oap. solution i "added, aprecipitate"ofthcorrsponding metallic oleo-resinate occurs and when the soluble salt of the metal is in excess the metallic oleo-resinate is completely separated out. In' the case of copper this is a dark green plastic mass. The oleo-resinates separate to the top and may be removed from the reaction mixture.

Dilute solutions of both the salt and the floating soap can be used either hot or cold to prepare the oleo-resinate desired, but the reaction will not proceed at the same rate as if carried out in the manner just described.

The final product may be washed and dried and is then ready for use. In the case of some of the more soluble oleo-resinates, it is advanr tageous to use sodium chloride solutions to wash the soap.

The reaction producing these soaps is one of doub-le decompositionin which the sodium oleoresinate or floating soap reacts'with a soluble salt of the metal. For example, when the sodium oleo-resinate or floating soap reacts with copper sulfate, the oleo-resin and S04 radicals exchange .places, producing copper oleo-resinate and sodium sulfate. If desired, the sodium sulfate in such a reaction may be recovered. In like I manner, the nitrates, chlorides, acetates, or any other water soluble salt of the metal whose oleo resinate is sought may be used and the corresponding sodium salt formed.

Inasmuch as the sulfates of calcium, lead, silver, and some other metals are relatively insoluble, the use .of sulfates of such metal would be either impossible or inadvisable, while the nitrates of such metals may be used. In the case oflead, mercurous mercury and silver, the chloride may not give a complete reaction. In any case, the salt employed will be that soluble salt of the metal in which the metallic radical con tent is least expensive.

The oleo-resinates produced as hereinbefore described ,from floating soap are useful as driers in paints, varnishes, inks and like products, and differ inphysical and chemical properties from mixtures of commercial oleates, linoleates and resinates heretofore used as driers. Also products made in accordance with my invention are particularly useful as constituents in v varnishes, paints and, the like, in which they may be employed to take the place of resins, shellac,

waxes, and like substances heretofore employed.

Among other uses I have found that the prodfor coating and glazes and metal lusters on ceramics; as insecticides, germicides and fungicides when prepared from salts of the poisonous metals: as water repellant agents for paper, textiles, concrete, andsimilar uses, and other imnum, lead, calcium, magnesium, manganese, iron,

cobalt, nickel, mercury, arsenic, barium, bismuth, chromium, copper,'antim0ny, tin, zinc, and other less common metal elements.

While I have shown my invention in but one form, it will be obvious tothose skilled in the art that it is not so limited, but is susceptible of Various changes and modifications, without departing from the spirit thereof, and I desire, there'- fore, that only such limitations shall be placed thereupon as are specifically set forth in the appended claims. a

What I claim is: i

1. The process of producing. a metal soap of ucts made according to my invention 'a'reuseful the heavy metals and alkaline earth metals which comprises reacting a water solution of a compound of the metal selected from the group consisting of heavy metals and alkaline earth metals with "floating soap collected from black liquor in the manufacture of cellulosic material by the sulfate or soda process.

' 2;, The process of producin a metal soap of the heavy metals and alkaline earth metals which comprises reacting a hot concentrated water solution of a compound of such a metal with floating soap collected from black liquor in the manufacture of cellulosic material by the sulfate or soda process.

'3. The process of producing a copper soap which comprises .reacting copper sulfate with floating soap collected from black liquor in the manufactuer of cellulosic material by the sulfate or soda process.

4. The process of producing an aluminum soap which comprises reacting a water soluble aluminum compound with floating soap collected from black liquor in the manufacture of cellulosic material by the sulfate or soda process.

5. The process of producing cobalt soap which comprises reacting a water soluble cobalt compound with floating soap collected from black liquor in the manufacture of cellulosic material by the sulfateor soda process. 1

PAUL, HODGES. 

